초록 ▼

A visual display device is provided for delivering a generated image, preferably combinable with environment light, to the eye of a user. Light from an image generator such as a CRT, LED or LCD is reflected from a fold mirror away from a user's eye towards a combiner. The image is reflected from the

A visual display device is provided for delivering a generated image, preferably combinable with environment light, to the eye of a user. Light from an image generator such as a CRT, LED or LCD is reflected from a fold mirror away from a user's eye towards a combiner. The image is reflected from the combiner and magnified, optionally combined with light from the environment and passes back through the fold mirror towards the eye of the user. In one embodiment, an optical element such as a meniscus lens or PCX lens is used to present the user with a substantially flat focal field and/or a Fresnel lens or diffractive optical element is used to aim rays from the image to the field curvature corrective lens in order to maintain maximum contrast.

대표청구항 ▼

[ What is claimed is:] [1.] Transmissive head-mounted on-axis display apparatus for a user, comprising:an image generator which outputs image light, said image generator defining an output plane;a first partially reflective mirror positioned to receive image light from the image generator and to ref

[ What is claimed is:] [1.] Transmissive head-mounted on-axis display apparatus for a user, comprising:an image generator which outputs image light, said image generator defining an output plane;a first partially reflective mirror positioned to receive image light from the image generator and to reflect at least a first portion of said image light in a first direction, wherein said image light impinges said first mirror at an angle of between about 40.degree. and about 50.degree.;a second partially transmissive mirror defining a mirror centroid situated to receive at least some of said first portion of said image light from said first mirror and reflect at least a second portion of said image light combined with environmental light, to provide combined light, a tangent plane of said second partially transmissive mirror, at said centroid, positioned at an angle of between about 85.degree. and about 95.degree. with respect to said output plane of said image generator, wherein at least some of said combined light is transmitted through said first mirror in a second direction for ultimate transmission to the eye position of the user, providing an optical path from said image generator to said first mirror, to said second mirror, through said first mirror and to said eye position of the user.